diff --git a/src/databricks/sql/backend/sea/backend.py b/src/databricks/sql/backend/sea/backend.py
index 76903ccd..ff0a259c 100644
--- a/src/databricks/sql/backend/sea/backend.py
+++ b/src/databricks/sql/backend/sea/backend.py
@@ -11,6 +11,7 @@
     ResultCompression,
     WaitTimeout,
 )
+from databricks.sql.thrift_api.TCLIService import ttypes
 
 if TYPE_CHECKING:
     from databricks.sql.client import Cursor
@@ -402,7 +403,7 @@ def execute_command(
         lz4_compression: bool,
         cursor: "Cursor",
         use_cloud_fetch: bool,
-        parameters: List[Dict[str, Any]],
+        parameters: List[ttypes.TSparkParameter],
         async_op: bool,
         enforce_embedded_schema_correctness: bool,
     ) -> Union["ResultSet", None]:
@@ -436,9 +437,9 @@ def execute_command(
             for param in parameters:
                 sea_parameters.append(
                     StatementParameter(
-                        name=param["name"],
-                        value=param["value"],
-                        type=param["type"] if "type" in param else None,
+                        name=param.name,
+                        value=param.value,
+                        type=param.type,
                     )
                 )
 
diff --git a/tests/unit/test_sea_backend.py b/tests/unit/test_sea_backend.py
index f30c92ed..a2c1aeb0 100644
--- a/tests/unit/test_sea_backend.py
+++ b/tests/unit/test_sea_backend.py
@@ -13,6 +13,7 @@
     _filter_session_configuration,
 )
 from databricks.sql.backend.types import SessionId, CommandId, CommandState, BackendType
+from databricks.sql.thrift_api.TCLIService import ttypes
 from databricks.sql.types import SSLOptions
 from databricks.sql.auth.authenticators import AuthProvider
 from databricks.sql.exc import (
@@ -354,7 +355,7 @@ def test_command_execution_advanced(
             "status": {"state": "SUCCEEDED"},
         }
         mock_http_client._make_request.return_value = execute_response
-        param = {"name": "param1", "value": "value1", "type": "STRING"}
+        param = ttypes.TSparkParameter(name="param1", value="value1", type="STRING")
 
         with patch.object(sea_client, "get_execution_result"):
             sea_client.execute_command(